In the early days of the Nintendo DS, the two series that really sold me on the portable device were the “Phoenix Wright,” and “Trauma Center” games, both of which used the dual and touch screen technology in innovative ways.

Of the two, “Phoenix Wright” went on to become the more popular, but it was the ER simulator “Trauma Center,” that may have been the more compelling, with its tense and elaborate surgery scenarios made possible by some perfect touch controls and inspired overall design. It’s a type of game that wasn’t done much before, and besides some spiritual follow-ups like “Surgeon Simulator,” hasn’t really been done much since.

The Adult Swim series “Amateur Surgeon” has always been a glowing exception though, as it took the basic design of “Trauma Center,” and injected pure craziness in it, to produce a series that never exactly reached the heights of its inspiration, but does carry on the legacy quite nicely.

Not much has changed with the third entrant into the “Amateur Surgeon” series, but there are a couple of new features, of which the biggest is the move to a free to play format. Naturally this does mean the inclusion of some annoying pay to play elements, but they’re actually downplayed nicely, and you can get through the game rather easily without spending a dime. The biggest exception to that would have to be the new “tag” feature, which allows you to bring in a partner for their special abilities, but costs quite a bit of in game money, which you can of course purchase with real cash.

Other than that, what you have is another absolutely insane surgery game that sees you operate on mutated bears with chainsaws, and other less pedestrian activities. While the wackiness is part of the experience, the actual humor of the game is pretty hit or miss, and is only there to serve the far more entertaining gameplay.

It never really gets old trying to figure out how to fix bizarre injuries with even crazier tools, and that’s largely because the touchscreen, reflex and precision driven controls work as well for this type of game as ever. They are what elevates “Amateur Surgeon” to must have status, and help ensure that the initial joy of trying to figure out what to do on your first play through, doesn’t compare to trying to get that perfect run on every subsequent try.

You couldn’t be blamed for being attracted to “Amateur Surgeon” for its crazy sense of humor, and generally lighthearted nature. What’s going to keep it in your app game rotation though is a truly great gameplay system reliant on just about everything that makes touchscreen gaming so fun in the first place. I wouldn’t want to catch my doctor playing it, but everyone else should get ready to find themselves addicted to stapling shut freshly shived hearts in what is simply a pure fun app of the week.